The house north of the Poké Center houses the Dance Theater. Talk to the old man in the audience, then defeat all 5 Kimono Girls (each uses one of the Eeveelutions). Talk to him again and he will give you HM03 (Surf).
The man in the house to the west of the Poké Center will give you an Itemfinder. Use it to locate items which are invisible. You may have to press several times on the same spot before the item appears.
Hyper Potion (in corner near water)
Itemfinder
Burned Tower
Burned Tower, level 1Burned Tower, level 2
When you enter the Burned Tower, Ensuine will tell you that he has tracked a rare Pokémon, Suicune, to the Tower. Smash the rock in the northeast corner to get an Ultra Ball. Make your way into the center, where your Rival bitterly complains about not seeing Suicune, then attacks you with four Ghost-types. When you've defeated him, a hole will open under your feet and you'll fall to the lower level. Three Pokémon will awaken and fly away. Ensuine informs you that these were the Legendary Pokémon; you'll encounter them again.
The trainers here all use Ghost-type Pokémon, so put away your Bug, Fighting and Normal types. If you step off the invisible path, you'll be bounced back to the beginning.
several times on the same spot before the item appears.
Koffing
Rattata
Zubat
Raticate
